GENERAL DESCRIPTION

The EMC1212 is a temperature sensor that communicates with a host over a single-wire SMSC BudgetBus? Sensor Interface. The EMC1212 monitors one internal diode and one remote temperature zone. Packaged in a SOT23-5, the EMC1212 provides an accurate, low-cost, low-current, solution for critical temperature monitoring in applications such as embedded systems or computers. When used in combination with an SMSC Super I/O host, such as a keyboard controller, a complete thermal management system is created. A power down mode extends battery life in portable applications. The internal 11-bit sigma delta temperature-to-digital converter provides superb linearity, high accuracy and excellent noise immunity.

FEATURES

■ Single Wire BBUS Interface

■ Resistance Error Correction

■ Beta Compensation

■ External Temperature Monitor

— 0.125°C resolution

— ±1°C Accuracy 60°C to 100°C

— Diode Fault Reporting

■ Internal Temperature Monitor

— Range 0°C to +85°C

— 0.125°C resolution

— ±1.5°C Accuracy 50°C to 70°C

■ Supply:

— 3.0V to 3.6V

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APPLICATIONS

■ Desktop and Notebook Computers

■ Hardware Management